Toshiba H1 Series - Manual (Page 120)

TMP92CZ26A
92CZ26A-117
3.7.1 Port 1 (P10 to P17)
Port1 is an 8-bit general-purpose I/O port. Bits can be individually set as either inputs or
outputs by control register P1CR and function register P1FC.
In addition to functioning as a general-purpose I/O port, port1 can also function as a data
bus (D8 to D15).
Setting the AM1 and AM0 pins as shown below and resetting the device initialize port 1
to the following function pins:
AM1 AM0 Function Setting after reset is released
0
0
1
1 0
1
0
1 Don’t use this setting
Data bus (D8 to D15)
Don’t use this setting
Input port (P10 to P17)
Figure 3.7.1 Port1
P1CR Register
P1FC Register
P1 Register
S
0
1
Selector
S
1
0
Selector
External write enable
D8 to D15
Port read data
D8 to D15
External read enable
P10 to P17
(D8 to D15)